CN103349892A - Cross-flow type two-stage moving bed active coke waste gas integrated purification tower - Google Patents

Cross-flow type two-stage moving bed active coke waste gas integrated purification tower Download PDF

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Publication number
CN103349892A
CN103349892A CN2013102977844A CN201310297784A CN103349892A CN 103349892 A CN103349892 A CN 103349892A CN 2013102977844 A CN2013102977844 A CN 2013102977844A CN 201310297784 A CN201310297784 A CN 201310297784A CN 103349892 A CN103349892 A CN 103349892A
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China
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bed
desulfurization zone
denitration
activated coke
denitration district
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CN103349892B (en
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刘静
辛昌霞
曾艳
田雷
刘强
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SHANGHAI CLEAR ENVIRONMENTAL PROTECTION SCIENCE AND TECHNOLOGY Co Ltd
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SHANGHAI CLEAR ENVIRONMENTAL PROTECTION SCIENCE AND TECHNOLOGY Co Ltd
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Abstract

The invention discloses a cross flow type two-stage moving bed active coke waste gas integrated purification tower which comprises a purification tower main body, wherein the purification tower main body is provided with an active coke feeding region, a denitration region, a transitional layer, a desulfuration region and a discharging layer sequentially from top to bottom; the denitration region comprises a denitration region active coke bed layer, a denitration region inlet chamber and a denitration region outlet chamber; the desulfuration region comprises a desulfuration region active coke bed layer, a desulfuration region outlet chamber and a desulfuration region inlet chamber; the transitional layer comprises an inlet chimney flue with a waste gas inlet, and a discharge hopper, the inlet chimney flue is arranged above the desulfuration region inlet chamber in a conducting manner, the denitration region active coke bed layer is connected with the desulfuration region active coke bed layer through the discharge hopper, and the desulfuration region outlet chamber is connected with the denitration region inlet chamber in a conducting manner. According to the invention, the pollution purification efficiency is high, the active coke utilization ratio is high, and the circulation volume is small; airflow distribution is uniform and the resistance is small; the flowing of the active coke is unobstructed and uniform, the denitration efficiency is high, and the operation is stable.

Description

A kind of cross-current type twin-stage moving-bed active coke waste gas integrated purification tower
Technical field
The present invention relates to a kind of gas purification tower, relate in particular to a kind of cross-current type twin-stage moving-bed active coke waste gas integrated purification tower.
Background technology
China control SO 2Very heavy with NOx discharging task, the standard of toxic emission is also more and more higher, waste gas purification adopts Wet technique mostly at present, when consuming great lot of water resources, also cause secondary pollution, and desulphurization denitration simultaneously, particularly at the rich coal of northern China and the area of lack of water, water resource is restricting economic construction and development.
Flue Gas Purification Technology Using Activated Coke is a kind of dry method flue gas purification techniques of resourcebility, under 80~150 ℃ temperature, and by the adsoption catalysis of activated coke, the SO in the waste gas 2, O 2, H 2O reaction is converted in the micropore that sulfuric acid is adsorbed on activated coke, realizes desulfurizing and purifying; Under this temperature, when adding ammonia, the NOx in the flue gas can carry out selective catalytic reduction reaction in activated coke, and NOx is decomposed into N 2, H 2O.But at the same time in the process of desulphurization denitration, SO in the waste gas 2Concentration has negative effect to denitration efficiency.
Moving bed is a kind of reactor commonly used, the way of contact by flue gas and activated coke is divided into and stream, adverse current and three kinds of modes of cross-flow, cross-flow moving bed stream owing to gas phase and solid phase separates, be convenient to the control that gas phase and solid phase flow, the gas-solid contact area is large simultaneously, process large-mindedly, drag losses is little, is used widely in active coke desulphurizing.In the waste gas purification process, activated coke relies on gravity slowly to move down, and contacts with waste gas simultaneously, and the harmful substance in absorption conversion or the waste gas decomposition by the filtration of particle, captures the various solid phase particles in the waste gas simultaneously.
Remove efficient in order to keep higher harmful substance, require adsorbent activity Jiao and purifying exhaust air to flow with uniform speed.Because in the process of the reaction that purifies, also produce heat, often accumulation of heat occurs in position insufficient in exhaust-gas flow or the activated coke stagnation, produces focus, even on fire.
The disclosed exhuast gas desulfurization of CN101801504A, denitrification apparatus arrange the method for the capture of throttling control and dust, but gas flow are not adopted effectively control in the device in the bottom of equipment, SO is not arranged simultaneously yet 2To the effective control measure of denitrifying oxide, therefore for the treatment of SO 2When hanging down waste gas, effect should be better.But to high concentration SO 2Gas, because reaction heat is large, the NH that adds for denitration simultaneously 3Easily and SO 2Reaction generates ammonium salt, reduces usefulness.Patent CN201572596U discloses a kind of cross-flow type moving bed desulfurizing tower, stream and import and export flue to gas are optimized, the mode that adopts many blankings to bore is controlled activated coke and is flowed, improve purification efficiency, reduce SR, but adopt single-stage bed adsorbent bed, the utilization rate of activated coke is lower, simultaneously during desulphurization denitration, ammonia mixes unequal problem with flue gas, also need improve.
Some patent employing desulfurizing tower and denitrating tower mode arranged apart has increased system's occupation of land in addition.Such as patent JP62171737.
Therefore, those skilled in the art is devoted to develop always and a kind ofly can overcomes defects, realizes that pollutant purification efficient is high; The activated coke utilization rate is high, and internal circulating load is little; Air-flow is evenly distributed, resistance is little; Activated coke flows unobstructed even, and denitration efficiency is high, stable cross-current type twin-stage moving-bed active coke waste gas integrated purification tower.
Summary of the invention
In view of the deficiency that above-mentioned prior art exists, the present invention proposes a kind of pollutant purification efficient height, the activated coke utilization rate is high, and internal circulating load is little; Air-flow is evenly distributed, resistance is little; Activated coke flows unobstructed even, and denitration efficiency is high, stable cross-current type twin-stage moving-bed active coke waste gas integrated purification tower.
The present invention is for achieving the above object, a kind of cross-current type twin-stage moving-bed active coke waste gas integrated purification tower provided by the invention, comprise the purifying column main body, described purifying column main body from top to bottom is disposed with activated coke feed zone, denitration district, transition zone, desulfurization zone and goes out the bed of material.
Described denitration district comprises denitration district activated coke bed, denitration district inlet plenum and denitration district discharge chamber, described denitration district discharge chamber is arranged on mid portion, described denitration district inlet plenum is arranged on the outermost part, be provided with described denitration district activated coke bed between described denitration district's discharge chamber and the described denitration district inlet plenum, described denitration district's inlet plenum and the activated coke bed conducting of described denitration district, described denitration district activated coke bed and the discharge chamber conducting of described denitration district, discharge chamber top in described denitration district is provided with clean gas outlet.
Described desulfurization zone comprises desulfurization zone activated coke bed, desulfurization zone discharge chamber and desulfurization zone inlet plenum, described desulfurization zone inlet plenum is arranged on mid portion, described desulfurization zone discharge chamber is arranged on the outermost part, be provided with described desulfurization zone activated coke bed between described desulfurization zone inlet plenum and the described desulfurization zone discharge chamber, described desulfurization zone inlet plenum and the conducting of described desulfurization zone activated coke bed, described desulfurization zone activated coke bed and the conducting of described desulfurization zone discharge chamber.
Described transition zone comprises air inlet flue and the dump skip with exhaust gas inlet, the conducting of described air inlet flue is arranged on described desulfurization zone inlet plenum top, described denitration district activated coke bed respectively is connected with described desulfurization zone activated coke bed by described dump skip, and described desulfurization zone discharge chamber is connected with the inlet plenum conducting of described denitration district.
As a further improvement on the present invention, the top conducting of described denitration district discharge chamber is provided with one and is used for the flue of giving vent to anger that output purifies rear gas, and described clean gas outlet conducting is arranged on the described flue of giving vent to anger.
As a further improvement on the present invention, be provided with spray ammonia member on the conducting linkage section of described desulfurization zone discharge chamber and described denitration district inlet plenum.
As a further improvement on the present invention, described spray ammonia member comprises deflector and spray ammonia pipe, described deflector oblique cutting is in described conducting linkage section, and described spray ammonia pipe is arranged on the below of described deflector, offers at a certain distance the outlet of spray ammonia on the tube wall of described spray ammonia pipe outwardly.
As a further improvement on the present invention, it is characterized in that: conducting is provided with runner between the bottom of described denitration district discharge chamber and the described dump skip.
As a further improvement on the present invention, the bottom of described desulfurization zone discharge chamber and describedly go out that conducting is provided with runner between the bed of material.
As a further improvement on the present invention, described denitration district activated coke bed is set to the shutter flase floor with described denitration district's inlet plenum or with the side that links to each other of described denitration district discharge chamber.
As a further improvement on the present invention, described desulfurization zone activated coke bed is set to the shutter flase floor with described desulfurization zone inlet plenum or with the side that links to each other of described desulfurization zone discharge chamber.
Further improve as the present invention, the louver angel of described shutter flase floor is 70~80 °.
As a further improvement on the present invention, the thickness of described denitration district's activated coke bed and described desulfurization zone activated coke bed is 1.5~2.5m.
As a further improvement on the present invention, described dump skip comprises conic distributor and cone bucket, described conic distributor be arranged on the cone bucket directly over.
As a further improvement on the present invention, describedly go out the bed of material and be provided with discharge bucket, described discharge bucket correspondence is arranged on described desulfurization zone activated coke bed bottom.
As a further improvement on the present invention, described discharge bucket comprises conic distributor and cone bucket, described conic distributor be arranged on the cone bucket directly over.
As a further improvement on the present invention, be provided with air distribution plate in the described air inlet flue.
As a further improvement on the present invention, at least one air flow guiding plate is set in the described air inlet flue, described air flow guiding plate comprises for the segmental arc that air-flow is turned to for the straight section that turns to rear air-flow current stabilization.
The waste gas purification principle of cross-current type twin-stage moving-bed active coke waste gas integrated purification tower of the present invention is as follows:
1) waste gas to be clean imports integrated purification tower of the present invention by the exhaust gas inlet of air inlet flue and purifies, described waste gas at first enters the desulfurization zone (slightly taking off the district) of bottom, carry out thick desulfurizing and purifying and process, utilize simultaneously absorption and the filtration of activated coke particle, remove heavy metal and dust.
2) waste gas of processing through thick desulfurization enters denitration district (essence is taken off the district), carries out smart desulfurization and processes; Entered by the desulfurization zone discharge chamber in the process of denitration district inlet plenum and can add simultaneously NH by spray ammonia member 3After carrying out further denitration and processing, pass denitration district activated coke bed again and carry out essence and take off, the described denitration district activated coke bed that then is in the top flows into the below desulfurization zone to be continued to use as desulfurization zone activated coke bed.
3) activated coke is slowly mobile from top to bottom, contacts with pending gas in moving process, and gas is purified, and draws off from going out the bed of material at last, and is after regenerating, recycling.
Cross-current type twin-stage moving-bed active coke waste gas integrated purification tower of the present invention adopts desulfurization zone and the integrated scheme of denitration district two-stage, has following advantage:
1) the present invention adopts up and down twin-stage reaction structure, at subordinate's desulfurization zone, utilize the activated coke in higher level's denitration district, carry out the pollutant purifications such as desulfurization and heavy metal, can improve activated coke absorption Sulfur capacity utilization rate, reduce internal circulating load, further carry out desulfurization in higher level's denitration district, and utilize the catalysis characteristics of activated coke to realize denitration.
2) adopt the twin-stage reaction structure, at treatment S O 2During the high gas of concentration, be the activated coke in denitration district because desulfurization zone uses, its reactivity relatively activated coke utilized of absorption decreases, and can reduce the reaction heat of desulfurization zone, avoids hot-spot, can realize SO 2Content 10000mg/m 3Above waste gas purification, desulfuration efficiency reaches 99%, improves the security of desulfuration efficiency and device.
3) carry out desulfurization at desulfurization zone, make the waste gas SO that enters the denitration district 2Content, when carrying out denitration, the generation that reduces ammonium sulfate class material causes the occupying of activated coke micropore, and reduces denitration ammonia nitrogen ratio, improves system's denitration efficiency, and denitration efficiency can reach more than 70%.
4) conducting is provided with runner between the bottom of the described denitration district of purifying column discharge chamber and described dump skip, and the bottom of desulfurization zone discharge chamber and describedly go out that conducting is provided with runner between the bed of material, effectively avoided broken activated coke that waste gas takes out of and the accumulation of sedimentation dust.
Description of drawings
The structural representation of Fig. 1 specific embodiment cross-current type twin-stage moving-bed active coke waste gas integrated purification tower;
Fig. 2 is the A-A profile of Fig. 1;
Fig. 3 is the B-B profile of Fig. 1;
Fig. 4 is the C-C profile of Fig. 1;
Fig. 5 is the D-D profile of Fig. 1.
Primary clustering symbol description among the figure: 100-purifying column main body, 110-activated coke feed zone, 120-denitration district, 121-denitration district activated coke bed, 122-denitration district inlet plenum, 123-denitration district discharge chamber, the 130-transition zone, 131-exhaust gas inlet, 132-air inlet flue, the 133-dump skip, 1331-conic distributor, 1332-drapery panel, the 140-desulfurization zone, 141-desulfurization zone discharge chamber, 142-desulfurization zone activated coke bed, 143-desulfurization zone inlet plenum, 150-goes out the bed of material, 151-discharge bucket, 160-clean gas outlet, 170-spray ammonia member, 171-spray ammonia pipe, 172-deflector, 180-first flow, 181-the second runner, 190-shutter flase floor.
The specific embodiment
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Embodiment one:
The structural representation of Fig. 1 specific embodiment cross-current type twin-stage moving-bed active coke waste gas integrated purification tower.As shown in Figure 1, a kind of cross-current type twin-stage moving-bed active coke waste gas integrated purification tower that present embodiment proposes, comprise purifying column main body 100, purifying column main body 100 from top to bottom is disposed with activated coke feed zone 110, denitration district 120, transition zone 130, desulfurization zone 140 and goes out the bed of material 150.
Denitration district 120 comprises denitration district activated coke bed 121, denitration district inlet plenum 122 and denitration district discharge chamber 123, denitration district discharge chamber 123 is arranged on mid portion, denitration district inlet plenum 122 is arranged on the outermost part, be provided with denitration district activated coke bed 121 between denitration district discharge chamber 123 and the denitration district inlet plenum 122, denitration district inlet plenum 122 and activated coke bed 121 conductings of denitration district, denitration district activated coke bed 121 and discharge chamber 123 conductings of denitration district, discharge chamber 123 tops, denitration district are provided with clean gas outlet 160.
Desulfurization zone 140 comprises desulfurization zone activated coke bed 142, desulfurization zone discharge chamber 141 and desulfurization zone inlet plenum 143, desulfurization zone inlet plenum 143 is arranged on mid portion, desulfurization zone discharge chamber 141 is arranged on the outermost part, be provided with desulfurization zone activated coke bed 142 between desulfurization zone inlet plenum 143 and the desulfurization zone discharge chamber 141, desulfurization zone inlet plenum 143 and 142 conductings of desulfurization zone activated coke bed, desulfurization zone activated coke bed 142 and 141 conductings of desulfurization zone discharge chamber.
Transition zone 130 comprises with the air inlet flue 132 of exhaust gas inlet 131 and dump skip 133,132 conductings of air inlet flue are arranged on desulfurization zone inlet plenum 143 tops, denitration district activated coke bed 121 is connected with desulfurization zone activated coke bed 142 by dump skip 133, and desulfurization zone discharge chamber 141 is connected with inlet plenum 122 conductings of denitration district.
As shown in Figure 2, as the further specific embodiment of present embodiment, the top conducting of the denitration district discharge chamber of present embodiment is provided with the flue of giving vent to anger that purifies rear gas for output, and described clean gas outlet 160 conductings are arranged on the described flue of giving vent to anger.The top that the 132 same conductings of air inlet flue are arranged on the desulfurization zone inlet plenum is positioned at transition zone 130.Certainly, in other specific embodiments, the setting position of exhaust gas inlet and clean gas outlet also can be adjusted according to actual conditions, just repeats no more herein.
Such as Fig. 1 and shown in Figure 5, as the further specific embodiment of present embodiment, be provided with spray ammonia member 170 on the conducting linkage section of desulfurization zone discharge chamber 141 and denitration district inlet plenum 122.Spray ammonia member 170 comprises deflector 172 and spray ammonia pipe 171, and deflector 172 oblique cuttings are in described conducting linkage section, and spray ammonia pipe 171 is arranged on the below of deflector 172, offers at a certain distance the outlet of spray ammonia on the tube wall of spray ammonia pipe 171 outwardly.Exemplary, the internal face of deflector 172 and described conducting linkage section is 45 ° of angles to carry out oblique cutting and fixes, spray ammonia pipe 171 is fixed on the lower surface intermediate altitude of deflector 172 and with a certain distance from the position of lower surface, and on spray ammonia pipe, offer at a certain distance the outlet of spray ammonia, the waste gas of process is sprayed ammonia treatment.Certainly, in other specific embodiments, also can adopt other spray ammonia modes to realize spraying the ammonia operation, such as can directly arranging spray ammonia outlet etc. at the internal face of desulfurization zone discharge chamber and/or two denitration district inlet plenums.
Pile up in desulfurization zone discharge chamber and denitration district discharge chamber for fear of broken activated coke and sedimentation dust that processing procedure waste gas is taken out of, in time discharge the activated coke of leaking, present embodiment conducting between the bottom of denitration district discharge chamber 123 and dump skip 133 is provided with first flow 180, and in the bottom of desulfurization zone discharge chamber 142 and go out between the bed of material 150 also that conducting is provided with the second runner 181, the broken activated coke that realization will be taken out of and sedimentation dust in time import dump skip by runner and go out in the bed of material to process, and avoid piling up and stop up.Concrete, as shown in Figure 1 and Figure 4, first flow 180 can adopt in the bottom of denitration district activated coke bed 121 and the side that links to each other of denitration district discharge chamber 123 and plug a deflector, this deflector height is greater than 2/3 of dump skip height, and the inclination angle of deflector arranges greater than the cone hopper slope with dump skip 133, form the first flow of activated coke bed 123 bottoms, conducting denitration wide at the top and narrow at the bottom district and dump skip 133, the setting of the second runner is identical with first flow, repeats no more herein.Certainly, first flow 180 and the second runner 181 can selectively arrange according to actual conditions.
In order to make the smooth and easy activated coke bed that enters of waste gas, the smooth and easy downward smoothness of activated coke, present embodiment all is set to shutter flase floor 190 in the side that links to each other of link to each other side and desulfurization zone activated coke bed 142 and the desulfurization zone discharge chamber 141 of the side that links to each other, desulfurization zone activated coke bed 142 and the desulfurization zone inlet plenum 143 of the side that links to each other, denitration district activated coke bed 121 and the denitration district discharge chamber 123 of denitration district activated coke bed 121 and denitration district inlet plenum 122.Concrete, the louver angel of shutter flase floor 190 is 70~80 °.Certainly, the shutter flase floor 190 of each continuous side also can selectively arrange according to actual conditions.
Concrete, the denitration district activated coke bed 121 of present embodiment and the thickness of desulfurization zone activated coke bed 141 are 1.5m or 2.5m.Certainly, also can select according to the processing needs activated coke bed of other gauges.
Such as Fig. 1, Fig. 2 and shown in Figure 4, the dump skip 133 of present embodiment comprises conic distributor 1331 and cone bucket 1332, conic distributor 1331 be arranged on that cone bucket 1332 arranges directly over.Go out the bed of material 150 and comprise discharge bucket 151, discharge bucket 151 correspondences are arranged on desulfurization zone activated coke bed 142 bottoms.Discharge bucket 151 comprises conic distributor and cone bucket equally, described conic distributor arrange described cone bucket directly over.Exemplary, as shown in Figure 4, the denitration district activated coke bed 121 of present embodiment is vertical over against connecing with desulfurization zone activated coke bed 142 by dump skip 133, the in line shape that dump skip 133 is combined into for the distributing device of a plurality of four sides taper, the in line shape that discharge bucket 151 can be combined into for the distributing device of a plurality of four sides taper or with the elongated microscler cone of purifying column, the internal face of described conic distributor and its centerline angles degree are preferably less than 30 °.Dump skip 133 is arranged on the docking port of denitration district activated coke bed 121 and desulfurization zone activated coke bed 142, and discharge bucket 151 is arranged on the bottom discharging opening of desulfurization zone activated coke bed 142.The conic distributor of the described conic distributor 1331 of described dump skip 133 interior settings and the 151 interior settings of described discharge bucket plays the effect to activated coke throttling control.
According to actual needs, in air inlet flue 132, be provided with air distribution plate, one or more air flow guiding plates are set in the described air inlet flue.Concrete, described air flow guiding plate comprises for the segmental arc that air-flow is turned to for the straight section that turns to rear air-flow current stabilization, calculate according to Optimum Design shape and the installation site of described air flow guiding plate, and it is even to guarantee to go up along its length activated coke layer air-flow.
Concrete, as shown in drawings, the class cuboid that the purifying column main body 100 of present embodiment adopts as shown in Figure 1, the cross section is to square-section shown in Figure 5 such as Fig. 3.
Exemplary, the concrete condition that is applied in the coal-burning boiler for flue gas desulfurization, denitration system of the cross-current type twin-stage moving-bed active coke waste gas integrated purification tower of present embodiment is as follows:
Describe according to said structure, the purifying column main body is constructed as shown in Figure 1, purifying column main body 100 is imported and exported configuration lock gas baiting valve mainly by activated coke feed zone 110, denitration district 120, transition zone 130, desulfurization zone 140 with go out the bed of material 150 and consist of in activated coke.About 130 ℃ of boiler smokes directly enter in the air inlet flue 132 from exhaust gas inlet 131, under the guiding of air flow guiding plate, enter better desulfurization zone inlet plenum 143, the shunting rear side is to passing through monosymmetric desulfurization zone activated coke bed 142, after flue gas passes through the activated coke layer, enter desulfurization zone discharge chamber 141, after ammonia that the spray ammonia pipe 171 on desulfurization zone discharge chamber 141 tops adds mixes, upwards enter denitration district 120, contact with denitration district activated coke bed 121 in denitration district 120 selective catalytic reduction reaction occurs, finally by being pooled to denitration district discharge chamber 123 after 121 purifications of monosymmetric denitration district activated coke bed, discharged by clean gas outlet 160.Activated coke in higher level's the denitration district activated coke bed 121 is then slowly mobile from top to bottom simultaneously, import the desulfurization zone activated coke bed 142 of subordinate by the dump skip 133 of transition zone 130, utilize the activated coke in higher level's denitration district, carry out the pollutant purifications such as desulfurization and heavy metal, improved activated coke absorption Sulfur capacity utilization rate.
Embodiment two:
Present embodiment is that a coloured industry industrial furnace flue gas desulphurization system uses integrated purification tower of the present invention to carry out flue gas desulfurization, and the overall structure of integrated purification tower is basic identical with embodiment one, just no longer is equipped with spray ammonia member.
The design smoke treatment amount 2 * 10 of present embodiment 4Nm/h, SO 2Concentration 14000mg/m 3, intake air temperature is 130 ℃, design flue gas air speed is 300h -1, realized high concentration SO 2efficiently remove, and the qualified discharge of waste gas, it is large to have eliminated high concentrations of gas reaction heat, implement device stable operation.
The above only is preferred embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (10)

1. a cross-current type twin-stage moving-bed active coke waste gas integrated purification tower comprises the purifying column main body, and it is characterized in that: described purifying column main body from top to bottom is disposed with activated coke feed zone, denitration district, transition zone, desulfurization zone and goes out the bed of material;
Described denitration district comprises denitration district activated coke bed, denitration district inlet plenum and denitration district discharge chamber, described denitration district discharge chamber is arranged on mid portion, described denitration district inlet plenum is arranged on the outermost part, be provided with described denitration district activated coke bed between described denitration district's discharge chamber and the described denitration district inlet plenum, described denitration district's inlet plenum and the activated coke bed conducting of described denitration district, described denitration district activated coke bed and the discharge chamber conducting of described denitration district, discharge chamber top in described denitration district is provided with clean gas outlet;
Described desulfurization zone comprises desulfurization zone activated coke bed, desulfurization zone discharge chamber and desulfurization zone inlet plenum, described desulfurization zone inlet plenum is arranged on mid portion, two described desulfurization zone discharge chambers are arranged on the outermost part, be provided with described desulfurization zone activated coke bed between described desulfurization zone inlet plenum and the described desulfurization zone discharge chamber, described desulfurization zone inlet plenum and the conducting of described desulfurization zone activated coke bed, described desulfurization zone activated coke bed and the conducting of described desulfurization zone discharge chamber;
Described transition zone comprises air inlet flue and the dump skip with exhaust gas inlet, the conducting of described air inlet flue is arranged on described desulfurization zone inlet plenum top, described denitration district activated coke bed is connected with described desulfurization zone activated coke bed by described dump skip, and described desulfurization zone discharge chamber is connected with the inlet plenum conducting of described denitration district.
2. cross-current type twin-stage moving-bed active coke waste gas integrated purification tower as claimed in claim 1, it is characterized in that: the top conducting of described denitration district discharge chamber is provided with the flue of giving vent to anger that purifies rear gas for output, and described clean gas outlet conducting is arranged on the described flue of giving vent to anger.
3. cross-current type twin-stage moving-bed active coke waste gas integrated purification tower as claimed in claim 1 is characterized in that: be provided with spray ammonia member on the conducting linkage section of described desulfurization zone discharge chamber and described denitration district inlet plenum.
4. cross-current type twin-stage moving-bed active coke waste gas integrated purification tower as claimed in claim 3, it is characterized in that: described spray ammonia member comprises deflector and spray ammonia pipe, described deflector oblique cutting is in described conducting linkage section, described spray ammonia pipe is arranged on the below of described deflector, offers at a certain distance the outlet of spray ammonia on the tube wall of described spray ammonia pipe outwardly.
5. cross-current type twin-stage moving-bed active coke waste gas integrated purification tower as claimed in claim 1, it is characterized in that: conducting is provided with runner between the bottom of described denitration district discharge chamber and the described dump skip.
6. such as claim 1 or 5 described cross-current type twin-stage moving-bed active coke waste gas integrated purification towers, it is characterized in that: the bottom of described desulfurization zone discharge chamber and describedly go out that conducting is provided with runner between the bed of material.
7. cross-current type twin-stage moving-bed active coke waste gas integrated purification tower as claimed in claim 1, it is characterized in that: described denitration district activated coke bed is set to the shutter flase floor with the side that links to each other of described denitration district's inlet plenum or described denitration district discharge chamber.
8. cross-current type twin-stage moving-bed active coke waste gas integrated purification tower as claimed in claim 1, it is characterized in that: the side that links to each other of described desulfurization zone activated coke bed and described desulfurization zone inlet plenum or described desulfurization zone discharge chamber is set to the shutter flase floor.
9. such as claim 7 or 8 described cross-current type twin-stage moving-bed active coke waste gas integrated purification towers, it is characterized in that: the louver angel of described shutter flase floor is 70~80 °.
10. cross-current type twin-stage moving-bed active coke waste gas integrated purification tower as claimed in claim 1, it is characterized in that: the thickness of described denitration district activated coke bed and/or described desulfurization zone activated coke bed is 1.5~2.5m; Described dump skip comprises conic distributor and cone bucket, described conic distributor be arranged on the cone bucket directly over; Describedly go out the bed of material and be provided with discharge bucket, described discharge bucket correspondence is arranged on described desulfurization zone activated coke bed bottom; Described discharge bucket comprises conic distributor and cone bucket, described conic distributor be arranged on the cone bucket directly over.
CN201310297784.4A 2013-07-16 2013-07-16 A kind of cross-current type twin-stage moving-bed active coke waste gas integrated purification tower Active CN103349892B (en)

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CN111298592A (en) * 2018-12-12 2020-06-19 中国石化工程建设有限公司 Active coke adsorption tower and method for adsorbing and purifying flue gas by using active coke

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